TDF8599B
I2C-bus controlled dual channel 43 W/2 Ohm, single channel
85 W/1 Ohm class-D power amplifier with load diagnostics
Rev. 2 — 23 August 2016
Product data sheet
1
General description
The TDF8599B is a dual Bridge-Tied Load (BTL) car audio amplifier comprising an
NDMOST-NDMOST output stage based on SOI BCDMOS technology. Low power
dissipation enables the TDF8599B high-efficiency, class-D amplifier to be used with a
smaller heat sink than those normally used with standard class-AB amplifiers.
The TDF8599B can operate in either non-I C-bus mode or I C-bus mode. When in I C-
bus mode, DC load detection results and fault conditions can be easily read back from
2
the device. Up to 15 I C-bus addresses can be selected depending on the value of the
external resistor connected to pins ADS and MOD.
When pin ADS is short circuited to ground, the TDF8599B operates in non-I C-bus mode.
2
Switching between Operating mode and Mute mode in non-I C-bus mode is only possible
using pins EN and SEL_MUTE.
2
2
2
2
2
Features
High-efficiency
Low quiescent current
Operating voltage from 8 V to 24 V
Two 4 Ω/2 Ω capable BTL channels or one 1 Ω capable BTL channel
Differential inputs
2
2
2
I C-bus mode with 15 I C-bus addresses or non-I C-bus mode operation
Clip detect
Independent short circuit protection for each channel
Advanced short circuit protection for load, GND and supply
Load dump protection
Thermal foldback and thermal protection
DC offset protection
Selectable AD or BD modulation
Parallel channel mode for high-current drive capability
Advanced clocking:
–
Switchable oscillator clock source: internal for Master mode or external for Slave
mode
–
Spread spectrum mode
–
Phase staggering
–
Frequency hopping
•
No ‘pop noise’ caused by DC output offset voltage
2
•
I C-bus mode:
–
DC load detection
–
AC load detection
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
NXP Semiconductors
I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with
load diagnostics
–
Thermal pre-warning diagnostic level setting
–
Identification of activated protections or warnings
–
Selectable diagnostic information available using pins DIAG and CLIP
•
Qualified in accordance with AEC-Q100
TDF8599B
3
Applications
•
Car audio
4
Quick reference data
Table 1. Quick reference data
V
P
= 14.4 V unless otherwise stated.
Symbol
V
P
I
P
I
q(tot)
P
o
Parameter
supply voltage
supply current
total quiescent current
output power
Conditions
[1]
Min
8
-
-
[2]
Typ
14.4
2
90
Max
24
10
120
Unit
V
μA
mA
off state; T
j
≤ 85 °C; V
P
= 14.4 V
Operating mode; no load, snubbers and
filter connected
Stereo mode:
V
P
= 14.4 V; THD = 1 %; R
L
= 4 Ω
V
P
= 14.4 V; THD = 10 %; R
L
= 4 Ω
square wave (EIAJ); R
L
= 4 Ω
V
P
= 24 V; THD = 10 %; R
L
= 4 Ω
V
P
= 14.4 V; THD = 1 %; R
L
= 2 Ω
V
P
= 14.4 V; THD = 10 %; R
L
= 2 Ω
square wave (EIAJ); R
L
= 2 Ω
Parallel mode:
V
P
= 14.4 V; THD = 10 %; R
L
= 1 Ω
V
P
= 24 V; THD = 10 %; R
L
= 2 Ω
V
P
= 24 V; THD = 1 %; R
L
= 1 Ω
[2]
18
24
-
-
29
39
-
-
-
135
20
26
40
70
32
43
70
85
138
150
-
-
-
-
-
-
-
-
-
-
W
W
W
W
W
W
W
W
W
W
[1]
[2]
In this data sheet supply voltage V
P
describes V
P1
, V
P2
and V
PA
.
Output power is measured indirectly based on R
DSon
measurement.
5
Ordering information
Package
Name
Description
plastic, heatsink small outline package; 36 leads; low stand-off height
Table 2. Table 2. Ordering information
Type number
TDF8599BTH
Version
SOT851-2
HSOP36
TDF8599B
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 2 — 23 August 2016
2 / 54
NXP Semiconductors
I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with
load diagnostics
TDF8599B
6
Block diagram
V
DDA
10
AGND
SVRR
9
8
V
P1
31
STABI1
V
P1
V
P2
24
34
32
DRIVER
HIGH
DRIVER
LOW
PGND1
V
P1
IN1N
2
PWM
CONTROL
5
DRIVER
HIGH
DRIVER
LOW
29
BOOT1P
VSTAB1
BOOT1N
TDF8599B
IN1P
1
PWM
CONTROL
33
OUT1N
28
OUT1P
ACGND
PGND1
V
P2
+
23
BOOT2N
IN2P
3
PWM
CONTROL
DRIVER
HIGH
DRIVER
LOW
PGND2
V
P2
22
OUT2N
26
BOOT2P
IN2N
4
PWM
CONTROL
18
19
17
12
35
6
7
16
15
11
MODE
SELECT
+
I
2
C-BUS
36
GNDD/HW
DIAGNOSTICS
5 V STABI
OSCILLATOR
DRIVER
HIGH
DRIVER
LOW
PGND2
27
OUT2P
OSCSET
OSCIO
SSM
MOD
V
DDD
EN
SEL_MUTE
SCL
SDA
ADS
STABI2
PROTECTION
OVP, OCP, OTP
UVP, TFP,
WP, DCP
14
DIAG
13
20
30
PGND1
25
PGND2
21
VSTAB2
CLIP DCP
001aak214
Figure 1. Block diagram
TDF8599B
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 2 — 23 August 2016
3 / 54
NXP Semiconductors
I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with
load diagnostics
TDF8599B
7
Pinning information
7.1 Pinning
GNDD/HW 36
V
DDD
35
VSTAB1 34
OUT1N 33
BOOT1N 32
V
P1
31
PGND1 30
BOOT1P 29
OUT1P 28
OUT2P 27
BOOT2P 26
PGND2 25
V
P2
24
BOOT2N 23
OUT2N 22
VSTAB2 21
DCP 20
OSCIO 19
001aak215
1
2
3
4
5
6
7
8
9
IN1P
IN1N
IN2P
IN2N
ACGND
EN
SEL_MUTE
SVRR
AGND
TDF8599BTH
10 V
DDA
11 ADS
12 MOD
13 CLIP
14 DIAG
15 SDA
16 SCL
17 SSM
18 OSCSET
Figure 2. Heatsink up (top view) pin configuration TDF8599BTH
7.2 Pin description
Table 3. Table 3. Pin description
Symbol
IN1P
IN1N
IN2P
IN2N
ACGND
EN
Pin Type
1
2
3
4
5
6
I
I
I
I
I
I
[1]
Description
channel 1 positive audio input
channel 1 negative audio input
channel 2 positive audio input
channel 2 negative audio input
decoupling for input reference voltage
enable input:
2
non-I C-bus mode: switch between off and Mute mode
2
I C-bus mode: off and Standby mode
select mute or unmute
decoupling for internal half supply reference voltage
analog supply ground
analog supply voltage
non-I C-bus mode: connected to ground
2
I C-bus mode: selection and address selection pin
© NXP Semiconductors N.V. 2016. All rights reserved.
SEL_MUTE
SVRR
AGND
V
DDA
ADS
7
8
9
10
11
I
I
G
P
I
2
TDF8599B
All information provided in this document is subject to legal disclaimers.
Product data sheet
Rev. 2 — 23 August 2016
4 / 54
NXP Semiconductors
I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with
load diagnostics
Symbol
MOD
CLIP
DIAG
SDA
SCL
SSM
OSCSET
OSCIO
DCP
VSTAB2
OUT2N
BOOT2N
V
P2
[2]
TDF8599B
Pin Type
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
G
O
G
P
O
O
P
G
O
I/O
I
I
O
O
I/O
I
[1]
Description
modulation mode, phase shift and parallel mode select
clip output; open-drain
diagnostic output; open-drain
I C-bus data input and output
I C-bus clock input
master setting: Spread spectrum mode frequency
slave setting: phase lock operation
master/slave oscillator setting
master only setting: set internal oscillator frequency
external oscillator slave setting: input
internal oscillator master setting: output
DC protection input for the filtered output voltages
decoupling internal stabilizer 2 for DMOST drivers
channel 2 negative PWM output
boot 2 negative bootstrap capacitor
channel 2 power supply voltage
channel 2 power ground
boot 2 positive bootstrap capacitor
channel 2 positive PWM output
channel 1 positive PWM output
boot 1 positive bootstrap capacitor
channel 1 power ground
channel 1 power supply voltage
boot 1 negative bootstrap capacitor
channel 1 negative PWM output
decoupling internal stabilizer 1 for DMOST drivers
decoupling of the internal 5 V logic supply
ground digital supply voltage
handle wafer connection
2
2
PGND2
BOOT2P
OUT2P
OUT1P
BOOT1P
PGND1
V
P1
[2]
BOOT1N
OUT1N
VSTAB1
V
DDD
GNDD/HW
[1]
[2]
I = input, O = output, I/O = input/output, G = ground and P = power supply.
In this data sheet supply voltage V
P
describes V
P1
, V
P2
and V
PA
.
8
Functional description
8.1 General
The TDF8599B is a dual full bridge (BTL) audio power amplifier using class-D
technology. The audio input signal is converted into a Pulse-Width Modulated (PWM)
signal using the analog input and PWM control stages. A PWM signal is applied to driver
TDF8599B
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 2 — 23 August 2016
5 / 54
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